Certain hand-held tools alter the mapping between hand motion and motion of the tool end point that must be controlled in order to perform a task. For example, when using a pool cue, the motion of the cue tip is reversed relative to the hand. Previous studies have shown that the time required to initiate a reaching movement (Fernandez-Ruiz J, Wong W, Armstrong IT, Flanagan JR. Behav Brain Res 2...

Taking the key components of umbrella wind turbine regulating mechanism as research object, main stress concentration parts were determined by numerical simulation, and strength was checked. Through tunnel test, variation on adjustment with shrinkage angle under actual operating conditions tested. The results show that connecting rod small hub increases first then decreased increase angle, both...

In a previous paper the submicroscopic morphology of the outer and inner segments of the rod cell of the adult retina has been described (1). The conclusion was drawn, that the fibrous connection between both segments is constituted by a short cilium, the so called "connecting cilium," which is composed of nine pairs of filaments, a basal body, matrix material, and a surface membrane. The outer...

Three-cylinder gasoline engines are increasingly favored by major automobile manufacturers due to their good fuel economy, low manufacturing cost and consumption. However, the inherent balance problem has an adverse effect on vibration of whole engine even comfort vehicle, which limits its application in high-end models. This paper studied dynamics characteristic flexible multi-body system thre...